EP1004229A2 - Rotary harrow tine - Google Patents

Abstract

A horizontal tine (8, 8') is provided on the outside of the vertical tine (7, 7') in its top region, the length axis of the horizontal tine extending essentially radially outwards with respect to the harrow axis (3).

Description

The invention relates to rotating tillage tools, in particular for Power harrows according to the preamble of claim 1.

Soil cultivation tools for rotary harrows after the generic The preamble of claim 1 are, for example, in DE 297 09 134 U1 described.

Rotary harrow tillage tools are part of several arranged side by side, inevitably in opposite directions driven tool rotors. Those described in DE 297 09 134 U1 Tillage tools are designed and assigned to each other so that the beneficial effects of cutting and crumbling Soil cultivation tools are combined in a tool top.

Rotary harrows are mainly used for the production of seed beds especially in connection with the incorporation of biological mass, for example the biological mass of crops from harvested fields. The use of rotary harrows offers advantages in connection with the Direct sowing. In this context, the is even and possible complete incorporation of the biological mass for a quick Rotting process while producing a fine crumbly flat Seedbeds important for seed emergence.

Especially in connection with the processing wet and binding Soils that are interspersed with root fiber remnants and can cross while working the soil with tillage tools from Power harrows in a room encircled by the tillage tines Tine gyroscope form clumps of soil, which settle there. This is determined by the rotational movements of the tine gyroscope in the presence of Root fiber remnants additionally supported by the rotational movement Indentation of the floor by winding, which causes an additional Compaction effect on soil clumps within the tine rotors.

If this effect occurs, the clumping of the soil wedges within the Space between the tillage tines of tine rotors, which for Blockage of the passage spaces of the tine gyroscope can result.

This disruptive behavior adversely affects the process of Soil cultivation, which is a good mixing of the soil counteracts. At the same time, the traction forces for the tow and the power consumption for driving the rotary harrow among the previously mentioned interference conditions significantly, so that the operation in Extreme case must be interrupted for troubleshooting.

The invention has for its object in a simple manner for known Power harrows to create improved tillage tools that a more even mixing of the soil in the area of the upper one Soil horizon, especially from the point of view of incorporation of biological mass, and at the same time a clumping of the Soil within the effective range of the tine gyroscope between the Prevent tillage tools.

This object is achieved by the characterizing features of Claim 1 solved.

The known tillage tools of a tine spinning top, which as tillage tines predominantly vertically with the soil in Are engaged, are supplemented according to the invention by additional Horizontal tines, which are predominantly in the radial direction Tine gyro axis are aligned. The horizontal tines are part of it a tine top. The horizontal tines can be firmer or more detachable Be part of a tillage tool, for example in a composite with a vertical tine. Vertical tines and horizontal tines can also be used as individual tillage tools together with one Tool carrier of a tine gyroscope be releasably connected to this. Alternatively, it is also possible for several vertical tines and several Horizontal tines connected to a fixed unit with a tine rotor Form unity.

These horizontal tines of a tine gyro sweep over in the operating state a rotary harrow during each revolution two sections of the Machining areas of its neighboring tine rotors. Especially The horizontal tines advantageously have an offset their orbit perpendicular to the gyro axis. These radial tines, especially in a limited version, cause during their Rotational movements an additional swirling of the floor and one Transverse transport directed vertically upwards, which is a uniform mixing of the soil with biological mass with increased Air intake especially in the upper area of the tillage horizon enables.

By engaging the rotating horizontal tines in the work area Adjacent tine rotors in the operating state of a rotary harrow, in particular in the area of the space encircled by the vertical tines Tine gyroscope, this results in a neighboring one Tine gyro clumps of soil and thus blockages within the Passage spaces of a tine gyro prevented by clumping the floor through winding processes based on root fiber residues permeated by soil producible, torn and smashed in the beginning of its creation become.

Fig. 1 -

Eine Kreiselegge mit Zinkenkreiseln nach der Erfindung

Fig. 2 -

Schnitt A-A gemäß Fig. 1 nach der Erfindung

Fig. 3 -

Eine Gruppe von Zinkenkreiseln gemäß Einzelheit X in Fig. 1

Fig. 4 -

Schnitt B-B gemäß Fig. 3

Fig. 5 -

Darstellung des Überdeckungsbereiches benachbarter Zinkenkreisel

Fig. 6 -

Eine Gruppe von drei Zinkenkreiseln gemäß Fig. 4 mit höhenversetztten Horizontalzinken

Fig. 7 -

Eine Gruppe von drei Zinkenkreiseln gemäß Fig. 4 mit höhenversetztten Horizontalzinken benachbarter Zinkenkreisel

Fig. 8 -

Ein Zinkenkreisel mit lösbar an diesem angeschraubten Horizontalzinken

Further details of the invention can be found in the example description and the drawings. Here show:

Fig. 1 -

A rotary harrow with tine rotors according to the invention

Fig. 2 -

Section AA of FIG. 1 according to the invention

Fig. 3 -

A group of tine gyroscopes according to detail X in FIG. 1

Fig. 4 -

Section BB according to FIG. 3

Fig. 5 -

Representation of the coverage area of neighboring tine rotors

Fig. 6 -

A group of three tine rotors according to FIG. 4 with offset horizontal tines

Fig. 7 -

A group of three tine rotors according to FIG. 4 with vertically offset horizontal tines of adjacent tine rotors

Fig. 8 -

A tine spinner with detachable horizontal tines screwed onto it

Reference symbol list:

1 -

Rotary harrow

2 -

Tine spinning top

2 '-

outer tine top

3 -

Gyro axis

4 -

Tine circle bearings

5 -

Tool carrier

6 -

Gear box

7.7 '-

Vertical tines

8.8 ', 8' ', 8' '' '-

Horizontal tines

9 -

Knife tips

10 -

Flight circle

11 -

Inner circle

12 -

Coverage area

13 -

Cutting edge

14 -

Page sheet

15 -

Intersection

16 -

Connecting screw

17.17 '

Direction of rotation

F -

Direction of travel

R ₁ -

Inner circle radius

R ₂ -

Circle radius

α -

Opening angle

β -

Angle of attack

γ -

Clearance angle

δ -

Crossing angle

Fig. 1 shows a rotary harrow (1) with tine rotors (2) according to the invention. In a gear box (6) is a gear transmission in a known manner, whose gears are drivingly engaged with the tine rotors (2). The Tine rotors (2) have a tool holder (5) that fits into the Tine rotary bearings (4) is rotatably and drivably mounted. Each tine top (2) rotates around its gyro axis (3). A tine gyro (2) is preferably two Vertical tines (7,7 ') equipped, for example with the tool carrier (5) are screwed. The vertical tines (7,7 ') have horizontal tines (8,8') or (8 '', 8 '' '), which form a unit with the vertical tine (7,7'). The Horizontal tines (8,8 ') or (8' ', 8' '') can be used, for example, with the Vertical tines (7,7 ') welded, screwed, or directly forged his. In order to prevent the formation of a dam, the Working width on the implement side, one side plate (14) each on the rotary harrow (1) attached so that the outer tine rotors (2 ') shortened Horizontal tines (8 '', 8 '' ') are fitted. The horizontal tines (8,8 '); (8 '', 8 '' ') formed in this embodiment as knife tines.

Fig. 2 shows the section A-A of FIG. 1 in the direction of travel (F). The Knife tips (9) of the horizontal tines (8,8 '); (8 '', 8 '' ') move around their Gyro axis (3) on the flight circle (10, 10 '). Within a tine top (2) the vertical tines (7,7 ') touch the inner circle during their rotation (11), so that the generatrices of all inner circles form an imaginary body of revolution form between the vertical tines (7,7 ') of a tine gyroscope (2).

3 shows the enlarged representation of a group of three tine rotors according to detail X in Fig. 1. The horizontal tines (8,8 ') with their respective Cutting edge (13) are perpendicular to the gyroscopic axis with respect to their rotation planes (3) interlaced with the interlacing angle (δ).

4 shows the section BB according to FIG. 3. The vertical tines (7,7 ') circle the inner circle (11) with the inner circle radius (R ₁ ) in their operating state. Adjacent tine rotors (2) rotate in opposite directions with the directions of rotation (17, 17 '). The knife mushrooms (9) of the horizontal tines (8,8 ') of the tine rotors (2) each move on their flight circles (10) with the flight circle radius (R ₂ ). The horizontal tines (8,8 ') of a tine rotor (2) cover part of the inner circles (11) of the neighboring tine rotor (2) during their rotations. The common coverage of the inner circle (11) and the flight circle (10) results in the coverage area (12) of two adjacent tine rotors (2).

This common coverage area (12) is defined by the Opening angle (α), based on the gyro axis (3), which simultaneously the Circle center of the flight circle (10) defined. The area of the Coverage area (12) is formed by the coverage of a Flight circle (10) of an adjacent tine gyroscope (2) with an inner circle (11), the flight circle (10) and inner circle (11) intersecting at the intersections (15) to cut.

In the illustrated embodiment, the horizontal tines (8,8 ') are around set the angle of attack (β) tangential to the gyro axis (3), which is not a necessary requirement of the invention.

The ends of the horizontal tines (8,8 ') are around to reduce the power requirement the clearance angle (γ) beveled.

Fig. 5 shows the representation of the coverage areas (12) of neighboring Tine gyroscope (2), the coverage areas (12) being hatched are.

Fig. 6 shows a group of three tine gyros (2) according to FIG. 4, the Horizontal tines (8,8 ') per tine rotor (2) are offset in height from each other. In In this embodiment, the coverage areas (12) also offset in height. Section B-B corresponds to FIG. 4.

FIG. 7 shows a group of three tine rotors (2) according to FIG. 4, the Horizontal tines (8,8 ') are arranged at the same height per tine rotor (2) are, but are offset in height from two adjacent rotary tines. Section B-B corresponds to FIG. 4.

8 is another embodiment of a tillage tool according to the invention in connection with a tine gyroscope (2) shown. In this embodiment, the horizontal tines (8,8 ') and the vertical tines together with the tool carrier (5) Connection screws (16) screwed together, making this one enter into a detachable connection.

Power harrows with tillage tools according to the invention enable the rotation frequency of the tine gyroscope in its operating state compared to tillage tools without horizontal tines (8,8 ') to reduce. Overall, this leads to a more uniform soil mixing with organic matter, especially within the upper soil horizon come here. The swirling effects of the horizontal tines (8,8 ') are with a additional ventilation of the floor coupled, in consequence of which for biological decomposition processes of organic mass required Oxygen content of the soil is increased.

Claims (12)

Soil cultivation tool for tine rotors (2) of soil cultivation tools, in particular rotary harrows (1), in the form of a vertical tine (7, 7 ') aligned with its longitudinal extension approximately to the rotary axis (3), characterized in that on the outside of the vertical tine (7 or 7' ) a horizontal tine (8 or 8 ') is arranged in the upper area of its longitudinal extent, the longitudinal extent of which is directed outward approximately radially to the gyro axis (3). Soil cultivation tool according to claim 1, characterized in that when installed in tine rotors of tillage implements, in particular rotary harrows, with at least two vertical tines (7,7 ') as tillage tools at least one vertical tine (7 or 7') is provided with a horizontal tine (8 or 8 ') is. Soil cultivation tool according to claim 1 or 2, characterized in that in the case of a plurality of tine rotors (2), which are rotatably mounted next to one another transversely to the direction of travel about approximately vertical rotary axes (3), are inevitably driven in opposite directions and together form a rotary harrow (1), at least one vertical tine (7, 7 '), each of which has at least two vertical tines (7,7') tine rotors (2) has a horizontal tine (8 or 8 '). Soil cultivation tool according to one of claims 1 to 3, characterized in that the horizontal tine (8, 8 ') forms a unit with the vertical tine (7, 7') assigned to it. Soil cultivation tool according to one of claims 1 to 4, characterized in that vertical tines (7,7 ') and horizontal tines (8,8') are detachably connected to one another. Soil cultivation tool according to one of claims 1 to 5, characterized in that the horizontal tine (8, 8 ') associated with its vertical tine (7, 7') includes a twist angle (δ) opening backwards and upwards with the circumferential plane perpendicularly intersecting the rotary axis. Soil cultivation tool according to one of claims 1 to 6, characterized in that the horizontal tine (8, 8 ') encloses a pitch angle (β) which opens upwards against the direction of rotation with a radial plane enclosing the rotary axis. Soil cultivation tool according to one of claims 1 to 7, characterized in that the horizontal tine (8, 8 ') has a clearance angle (γ) at its end. Soil cultivation tool according to one of claims 1 to 8, characterized in that the horizontal tine (8, 8 ') has a cutting edge (13) on its circumferential direction in front of its longitudinal side. Soil cultivation tool according to one of claims 1 to 9, characterized in that the horizontal tines (8, 8 ') of a tine rotor (2) are arranged in the same circumferential plane. Soil cultivation tool according to one of claims 1 to 9, characterized in that the horizontal tines (8, 8 ') of a tine rotor (2) are arranged offset in height in different circulation levels. Soil cultivation tool according to one of claims 1 to 11, characterized in that the flight circle (10) of the outer end (9) of a horizontal tine (8 or 8 ') of a tine rotor (2) partially covers the inner circle (11) of an adjacent tine rotor (2).

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